Purple Biotech Ltd. — Director's Dealing 2026

Apr 17, 2026

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934

or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person*
Suzana Nahum-Zilberberg
(Last) (First) (Middle)
4 OPPENHEIMER STREET
(Street)
SCIENCE PARK, REHOVOT
(City) (State) (Zip/Postal Code)
ISRAEL
(Country)	2. Date of Event Requiring Statement
(Month/Day/Year)
03/18/2026	3. Issuer Name and Ticker or Trading Symbol
PURPLE BIOTECH LTD. [PPBT]
3a. Foreign Trading Symbol
(Check all applicable)
☑ Director 10% Owner
Officer Other
(give title below) (specify below)	5. If Amendment, Date of Original Filed
(Month/Day/Year)
6. Individual or Joint/Group Filing
(Check Applicable Line)
☑ Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I – Non-Derivative Securities Beneficially Owned
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1. Title of Security (Instr. 4)
Ordinary Shares
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Table II – Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date
(Month/Day/Year)

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	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	Price of Derivative Security	Direct (D) or Indirect (I) (Instr. 5)
Stock Option (Right to Buy)	(2)	(2)	Ordinary Shares	112,500	(2)	D
Stock Option (Right to Buy)	(3)	(3)	Ordinary Shares	300,000	(3)	D
Stock Option (Right to Buy)	(4)	(4)	Ordinary Shares	2,650,000	(4)	D

Explanation of Responses:

1. Includes 2,454,167 unvested restricted stock units ("RSUs"), each with respect to one ordinary share, no par value, per share ("Ordinary Shares"), of Purple Biotech Ltd. (the "Issuer"). The RSUs are subject to time-based vesting conditions and are settled in Ordinary Shares. The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents 2,000 Ordinary Shares

2. Represents stock option to purchase 112,500 Ordinary Shares (equivalent to 150 ADSs), issued to the reporting person pursuant to the Issuer's 2016 Equity-Based Incentive Plan. The stock option is fully vested and exercisable. The exercise price of this stock option is $0.126875 per Ordinary Share and the option expires on December 29, 2026.

3. Represents stock option to purchase 300,000 Ordinary Shares (equivalent to 150 ADSs), issued to the reporting person pursuant to the Issuer's 2016 Equity-Based Incentive Plan. Options to purchase 274,997 Ordinary Shares are vested and exercisable, with the remaining options to purchase 25,003 Ordinary Shares vesting in equal quarterly installments until April 24, 2026. The exercise price of this stock option is $0.059375 per Ordinary Share and the option expires on April 24, 2028.

4. Represents stock option to purchase 2,650,000 Ordinary Shares (equivalent to 1,325 ADSs), issued to the reporting person pursuant to the Issuer's 2016 Equity-Based Incentive Plan. Options to purchase 220,833 Ordinary Shares are vested and exercisable, with the remaining options to purchase 2,429,167 Ordinary Shares vesting in equal quarterly installments until October 21, 2028. The exercise price of this stock option is $0.00309375 per Ordinary Share and the option expires on October 21, 2030.

/s/ Suzana Nahum-Zilberberg
04/07/2026
** Signature of Reporting Person
Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

• If the form is filed by more than one reporting person, see Instruction 5(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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